Key Takeaways
- Exercise is the core, well-supported treatment for osteoarthritis; NICE names tailored therapeutic exercise as first-line, while TENS is at most an optional adjunct.
- A 2024 review of 21 knee osteoarthritis trials found a short-term pain signal for TENS added to usual care, but no significant gains in function and high variability between studies.
- NICE guideline NG226 advises against offering TENS, ultrasound, interferential, laser, pulsed short-wave, and NMES for osteoarthritis due to insufficient evidence of benefit.
- Clinicians should first confirm osteoarthritis versus inflammatory arthritis, since electrotherapy guidance for osteoarthritis should not be applied automatically to rheumatoid or other inflammatory types.
Arthritis pain affects millions of adults, and many patients ask their providers about drug-free options. TENS devices often come up in these conversations. They are small, portable, and easy to use at home. But what does the evidence actually show, and how should clinicians position these devices next to other care?
This article offers an honest look at arthritis pain management in 2026. It compares electrotherapy, mainly TENS, with core treatments such as tailored therapeutic exercise. It also explains where the research is strong, where it is weak, and how clinics can use devices responsibly as an adjunct. The goal is not to oversell any single tool. It is to help chiropractic and physical therapy teams give patients clear, accurate guidance.
The National Institutes of Health has reported high rates of persistent chronic pain among U.S. adults, which keeps demand for non-opioid options high. Understanding what each option can and cannot do is the first step toward a sound plan.
Understanding Arthritis Before Choosing a Treatment
"Arthritis" is not one condition. Osteoarthritis (OA) is a degenerative joint condition and the most common form. Rheumatoid arthritis and other inflammatory types are driven by the immune system. They need different medical care.
This difference matters for electrotherapy. Much of the guidance and research discussed below applies to osteoarthritis. It should not be applied automatically to rheumatoid arthritis or other inflammatory arthritis. Patients with inflammatory disease should stay under the direction of their physician or rheumatologist.
What Electrotherapy Actually Means
Electrotherapy is an umbrella term. It covers several different modalities, and they are not interchangeable:
- TENS (transcutaneous electrical nerve stimulation): surface electrodes deliver mild current, usually aimed at pain relief.
- NMES (neuromuscular electrical stimulation): stimulates muscle contraction, often used for strengthening or re-education.
- Interferential therapy: uses crossing currents, typically delivered in clinic settings.
- Therapeutic ultrasound, laser, and pulsed short-wave therapy: other modalities with different proposed uses.
For a broader foundation, see this overview of what electrotherapy is in 2026.
What Does the Evidence Say About Electrotherapy for Osteoarthritis?
The evidence is mixed. Anyone writing or speaking about electrotherapy and arthritis should say so plainly.
NICE Guidance on Osteoarthritis
The UK's National Institute for Health and Care Excellence (NICE) guideline NG226, published in 2022, advises against offering six electrotherapy modalities for osteoarthritis: TENS, ultrasound, interferential therapy, laser therapy, pulsed short-wave therapy, and NMES. The reason given is that evidence of benefit is insufficient. NICE noted that studies were often small and results were inconsistent.
This guidance applies to people aged 16 and over with osteoarthritis. It is a recommendation about the strength of evidence, not a statement that these tools are dangerous.
The 2024 Knee Osteoarthritis Review
A 2024 systematic-review conference report on knee osteoarthritis included 21 trials. It found a short-term pain signal for TENS combined with conventional treatment compared with conventional treatment alone (mean difference −0.82; 95% CI −1.01 to −0.62). However, the results varied a great deal between studies (I²=77%). The scale used for the pain estimate was not specified in the available excerpt, so that number should be read with caution.
The same report found no significant gains in several function measures:
- Six-minute walk distance: MD 3.42 (95% CI −7.72 to 14.57)
- WOMAC score: MD −0.44 (95% CI −4.69 to 3.82)
- Range of motion: MD 1.19 (95% CI −2.09 to 4.48)
In short, there may be a short-term pain benefit. There is no clear proof of better function, and long-term effects remain uncertain.
TENS vs. Therapeutic Exercise: A Side-by-Side Comparison
Comparing these two options is not about picking a winner. NICE names tailored therapeutic exercise as a core treatment for osteoarthritis. TENS is better viewed as a possible add-on for symptom relief. The table below shows how they differ.
Factor | TENS (Adjunct) | Tailored Therapeutic Exercise (Core) |
|---|---|---|
Role in OA care | Possible short-term symptom relief | Core recommended treatment (NICE) |
Evidence for pain | Short-term signal, high variability | Strong support as a first-line approach |
Evidence for function | No significant gains in 2024 review | Central goal of exercise programs |
Long-term benefit | Uncertain | Supported with ongoing participation |
Patient effort | Low; device is applied and operated | Higher; requires active participation |
Use at home | Yes, with instruction | Yes, with a guided program |
The practical takeaway: a device should never replace exercise, patient education, or weight management when relevant. Electrotherapy may help some patients tolerate movement. Movement is still what drives long-term progress.
Where TENS May Fit in an Arthritis Care Plan
Used with realistic expectations, a TENS unit can serve as one small part of a larger plan. A clinician-guided approach might look like this:
- Confirm the diagnosis. Separate osteoarthritis from inflammatory arthritis and rule out other causes of joint pain.
- Start with core care. Build a tailored exercise program and give patients clear education about their condition.
- Consider a device as an adjunct. If pain limits participation in exercise, a trial of TENS may be reasonable.
- Teach proper use. Cover electrode placement, intensity, and session length with hands-on instruction.
- Track outcomes. Record pain and function over time, and stop or adjust if there is no meaningful benefit.
For step-by-step help, review these guides on positioning TENS electrodes and setting the right intensity level. Clinics can also read about how effective electrotherapy is for joint pain relief.
What TENS Cannot Do
Clear boundaries protect both patients and practices. Electrotherapy should not be presented as a treatment that reverses arthritis, repairs cartilage, or replaces clinician-directed care. Evidence supports, at most, short-term symptom relief for some patients with knee osteoarthritis.
Safety and Patient Selection
The 2024 review reported no serious TENS-related adverse events in the included trials. That is encouraging, but it does not mean every device or every use is risk-free. Trial sizes and reporting limit conclusions about uncommon harms.
Skin irritation or discomfort can occur. Clinicians should review device instructions with each patient and screen for conditions that call for extra caution, including implanted electrical devices such as pacemakers. The Cleveland Clinic provides a helpful patient-facing explanation of how TENS works and who should be careful. For provider-focused detail, see TENS machine side effects: what clinicians must know.
The CDC also discusses nonopioid therapies for pain management, which gives providers useful context when talking with patients about alternatives to medication.
Choosing a Device and Supplier for Arthritis Patients
If a clinician decides a trial of TENS is appropriate, device quality and patient support matter. Look for these features:
- Simple controls that older adults can operate with confidence.
- Portable design that supports use at home and during daily activity.
- Reliable electrodes and lead wires that are easy to reorder.
- Clear manufacturer instructions that match your in-clinic teaching.
Liberty Medical Solutions is a Tampa-based nationwide supplier that works directly with chiropractic and physical therapy clinics. It provides TENS and electrotherapy devices, cervical traction units, and back braces, with a dedicated representative for each clinic. Its mission is to extend the relief a clinician delivers in the office into a patient's daily life at home. Clinics can browse the full product line or review the guide to choosing the best TENS unit for your clinical practice.
Supporting Patients After They Leave the Clinic
Home use only works when patients can keep their device running. Replacement electrodes and lead wires, warranty registration, and clear forms all help. Patients can use the supply request page to reorder items, which reduces gaps in care.
A Balanced Approach to Arthritis Pain Management in 2026
The most credible message is also the simplest. Exercise, education, and clinician-guided care come first. Electrotherapy may play a small supporting role for symptom relief in selected patients. Evidence for osteoarthritis is limited and inconsistent, so honest expectations build trust.
Clinics that explain these limits clearly tend to earn more patient confidence, not less. When a patient understands that a device is an adjunct and not a cure, they are more likely to stay engaged with the exercise and lifestyle steps that matter most. Providers can also read the research indexed on PubMed to stay current as new trials appear.
Conclusion
For arthritis pain management, TENS and tailored exercise are not true rivals. Exercise is a core, well-supported treatment. TENS is an optional adjunct with a short-term pain signal in knee osteoarthritis and no proven gains in function. NICE advises against several electrotherapy modalities for osteoarthritis because the evidence is insufficient, and that caution deserves respect.
The best results come from individualized plans, honest patient education, and careful follow-up. If your practice wants dependable devices and a supplier that supports patients at home, contact the Liberty Medical Solutions team to discuss your clinic's needs.
FAQs
Q: Can TENS help with osteoarthritis pain?
A: Some patients report short-term pain relief, and a 2024 review of knee osteoarthritis trials found a short-term pain signal when TENS was added to usual care. However, results varied widely and function did not improve significantly. TENS should be viewed as a possible adjunct, not a standalone treatment.
Q: Does NICE recommend TENS for osteoarthritis?
A: No. NICE guideline NG226 advises against offering TENS, ultrasound, interferential therapy, laser therapy, pulsed short-wave therapy, or NMES for osteoarthritis because evidence of benefit is insufficient. The guideline applies to osteoarthritis in people aged 16 and over, not to rheumatoid arthritis.
Q: What is the difference between TENS and NMES for arthritis?
A: TENS is generally used to reduce pain by stimulating sensory nerves. NMES is designed to cause muscle contractions, often for strengthening or re-education. The two serve different purposes and are not interchangeable.
Q: Should electrotherapy replace exercise or medication for arthritis?
A: No. NICE recommends tailored therapeutic exercise as a core treatment for osteoarthritis, with medicines supporting non-drug care when needed. Electrotherapy, if used, should be a clinician-guided adjunct and never a replacement for exercise, education, or medical care.
Q: Is it safe to use a TENS unit at home for arthritis pain?
A: The 2024 review reported no serious TENS-related adverse events, though skin irritation or discomfort can occur. Patients with implanted electrical devices or other medical conditions should seek clinical advice first and follow device instructions carefully.